If error is of unkown type, create and error response from it. (#289)

* If error is of unkown type, create and error response from it.

* Update src/commands/send/receive.command.ts

simplify error handling

Co-authored-by: Oscar Hinton <oscar@oscarhinton.com>

Co-authored-by: Oscar Hinton <oscar@oscarhinton.com>

src/commands/send/receive.command.ts

@@ -142,10 +142,9 @@ export class SendReceiveCommand extends DownloadCommand {
                     return Response.badRequest('Bad Request');
                 } else if (e.statusCode === 404) {
                     return Response.notFound();
-                } else {
-                    return Response.error(e);
                 }
             }
+            return Response.error(e);
         }
     }
 }